Need 2 balances - 22P and 22D

A quick learner from Lowell, MA says:
February 25, 2010
I have tilt in windows, and need to replace 2 ribbed, channel set balances (they have shoe 15-014 attached). They are stamped with 22D (left side) and 22P (right side). I do not see these on this page. Do you have them in stock? I am looking at the S751-23

Thanks,
Joe
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Casey from SWISCO responded:
March 1, 2010
Remove the window sash and place it on a scale.
The weight of the window sash in pounds is needed to determine the proper stamp option.

S751-23: Series 751, 23 inch balance length

Stamp option 22r will carry a window sash weight range of 10 through 18 pounds.
Stamp option 22hd will carry a window sash weight range of 18 through 22 pounds.
Stamp option 22tg will carry a window sash weight range of 22 through 30 pounds.

This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
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Casey from SWISCO responded:
March 1, 2010
Correct.
For Series 751, 23", (two) balances with stamp option 22r will accommodate a 16 pound window sash.
A quick learner from Lowell, MA says:
March 1, 2010
So for example, (just to clarify) if the window is 16 pounds total, i need 2 of the first balance on your list?
thanks.
Balance knife lock Shoe
Balance knife lock Shoe
15-014
$1.09
23" Series 751 Channel Balance
23" Series 751 Channel Balance
S751-23
$10.98
How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
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